That's really good. It sounds amazing. Looking forward to first light. I think 16/17 inches is a good size. 20 inch is a big jump in cost and weight and whilst it may capture a bit of extra detail the bang for your buck gain from the extra aperture seems not so great.
Whereas the jump from 12 inches to 16/17 is a large one. A bit like the jump from 4 to 6 inch APOs.
Greg.
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